package lab02.test11;

public class Square extends Rectangle {
         double c;
          Square(double a, double b) {
          super(a, b);
    }

    public  double getDiagonal()
        {
              c=Math.sqrt(a*a+b*b);
              return c;
        }

         public  void printMyWay() {
             System.out.println("该矩形的长a=" + a + "宽b=" + b);
             System.out.println("面积s=" + getArea());
             System.out.println("周长l=" + getLength());
             System.out.println("对角线d=" + getDiagonal());
         }

            public static void main(String[] args) {
                Rectangle rectangle;
                Square square;
                rectangle = new Rectangle(5, 3);
                square = new Square(4, 4);
                rectangle.printMyWay();
                square.printMyWay();



        }
    }